Yeah, sorry Adam, I made myself unclear.
What I mean is that training as if no-touch throws are martially effective is pointless because of the miniscule chance of one working against an assailant who does not practice Aikido.
Training them in the dojo is fine, ... as long as you don't take them seriously.

"... if someone had a legitimate way of making another fall without contact (on a consistant basis) "
That would be amazing, fantastic, and in my opinion worthy of a whole matial art! Unfortunately there is at least one martial art (OK, I saw some wierdos in Japan on 'kick-ass-moves semi-documentary) which tries to do this, and as far as I can see, fails.